This is about the perfect strength and flexibility. For a casual player. I very much dislike it coming into play tapped, but three colors for every subsequent turn is strong. The big come into play drawback and being printed at uncommon mean these aren't out of reach for those of us that don't want to spend an arm and a leg on lands.

I agree tri lands are awesome, the tapped part is a bit of a drawback, but only really worth mentioning if you have to play it on your first or second turn. The exact selection of r,g,w on one land works for many decks, especially when paired with savage lands to splash black. Add in trace of abundance, and you can generate all 5 colors in a relativley green oriented deck where thats the most common color. To say nothing of birds of paradise.

As a green mage who also loves green's ally colors, I am overjoyed to see this. Absolutely overjoyed. If it were a mountain forest plains that didn't come into play tapped, I would probably die from all the overjoyfullness.

These lands ROCK ! They are probably the best way to get 3 specific mana out of a land. Coming into play tapped is not that big a deal for the ability they provide. Also, at an uncommon rarity, you don't need to spend or trade a lot to get them. It's nice to see the great improvements in lands that produce multiple mana colors.

The only way this land cycle could be any better is if it was a double-cycle, that is to say, if there were a-color-and-it's-opposing-colors tri lands. Possibly they'll be in Rise of the Eldrazi.
Tri-lands havn't exactly been done successfully befor, have they? There was that set in 'Homelands', the Lairs, umm, I think that's all of them.

These are not upgrades to the Homelands lands; they are closer to the Lair lands where they come into play tapped instead of bouncing another land to your hand. The Homelands lands are closer to filter lands, if anything.